CMS DANSKIN ACOUSTICS recommended a bespoke combination of industrial acoustic materials to ensure noise at work compliance at ExxonMobil Oil Refinery.
The Challenge
Fawley Oil Refinery is the largest oil refinery in the UK. When ExxonMobil found that the noise output from two industrial fans at the refinery exceeded the levels specified by The Control of Noise at Work Regulations, it consulted CMS Danskin Acoustics
for advice. To ensure the most cost effective and high performing materials were specified, CMS Danskin Acoustics evaluated the noise reduction required on-site. Evaluation of the acoustic data revealed that noise levels in excess of 118dB at 125Hz were being emitted by the fans. Based on these criteria, the technical team at CMS Danskin Acoustics recommended the use of a combination of specialist materials from its industrial acoustic range.
The Solution
To control the low frequency-biased sound, CMS Danskin Acoustics recommended and supplied the SuperLag Quietslab Laminate with Acoustic Barrier Type WB10 combination for the fan casings and associated ductwork. Creating a multi-layered, high performance system, two layers of SuperLag Quietslab Laminate, totalling 250mm thickness, with a core of 5mm Acoustic Barrier Type WB10, were bonded onto the fan casings and ductwork. A direct coupled lagging system, SuperLag Quietslab Laminate comprises long-stranded mineral fibres thermo-set with resins for the absorption of sound at the surface, as well as a high mass inner acoustic barrier core to reduce the transmission of sound through the material. Manufactured from a weight-enhanced, high-density material, Acoustic Barrier Type WB10 provides a flexible and cost effective treatment for chemical and refinery applications. In total, 1,000m2 of the SuperLag Quietslab Laminate/Acoustic Barrier Type WB10 materials were installed around the fans and ductwork to achieve the high levels of sound reduction required.
Results
The high performance bespoke system specified by CMS Danskin Acoustics, significantly reduced the noise generated by the fans. This enabled ExxonMobil to comply with The Control of Noise at Work Regulations by bringing noise levels under the 85dB compliance level.
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